Chapter I · Scope of the tax

Article 5 When the tax liability arises

Artigo 5.º · Nascimento da obrigação tributária

Código do Imposto Municipal sobre as Transmissões Onerosas de Imóveis · annex II to Decree-Law No. 287/2003 · consolidated text checked 26 October 2026

#

1. The charge to IMT is governed by the legislation in force at the time the tax liability arises.

1 - A incidência do IMT regula-se pela legislação em vigor ao tempo em que se constituir a obrigação tributária.

#

2. The tax liability arises at the time the transfer takes place.

2 - A obrigação tributária constitui-se no momento em que ocorrer a transmissão.

#

3. In contracts for the exchange of present property for future property, the transfer of the future property takes place as soon as it becomes present property, unless, under the provisions of this Code, the transfer must be deemed to have taken place on an earlier date.

3 - Nos contratos de permuta de bens presentes por bens futuros, a transmissão, relativamente a estes, ocorre logo que os mesmos se tornem presentes, a não ser que, por força das disposições do presente Código, se tenha de considerar verificada em data anterior.

What we checked in this article

The rule that the law in force when the liability arises applies, the liability arising on transfer and the timing rule for exchanges of present for future property are retained.

Buying property in Portugal? Article 5 decides part of the bill.

We calculate IMT and stamp duty before you sign, check exemptions and the rate that applies to your buyer structure, and handle the property side of company and holding set-ups, in English. A written answer and a fixed quote within one working day.

Unofficial English translation prepared by BCA Portugal for reference. Only the Portuguese text published in the Diário da República has legal force. Editorial notes are ours and are not part of the statute.

Applying the law

Property tax in Portugal, calculated before you sign

The rate depends on what you buy, who buys it and why: own home, investment, company, non-resident or listed-jurisdiction buyer. Send us the deal and we will work out IMT, stamp duty and the options.

Get a quote